While having lunch with a friend recently, we got into a _____ that is pretty frequent in China about morning greeting.
--Would you like to play basketball with me? --________, but I have too much homework to do.
--Li Mei usually helps others, ________? --Yes, she is kind-hearted.
He devotes ________to ________.
Don’t turn on the radio __________ your mother allows you.
The room ___________ window is open is mine.